World population surpassed seven billion in 2011. And even though population growth rate is declining,at the moment, projections show continual growth ahead. What does this mean for our future? What should we do about it? Learn more with these population resources.

Annenberg Lerner: Human Population Dynamics This population course is part of Annenberg Learner’s The Habitable Planet multimedia environmental science course for teachers and other adult learners, providing access to “content and activities developed by leading scientists and researchers in the field.” It includes nine lessons (from Introduction to Further Reading), videos, a PDF textbook, and an interactive lab.

National Geographic: Calculating Population Density “Where are the greatest concentrations of people in the United States?” This population activity from National Geographic Education is a forty-five minute exercise for middle-school and high-school students. Using recommended web resources, “students calculate population density in the United States and describe some of the patterns in the results” on a downloadable worksheet. Below the interactive exercise, you’ll find instructions for teachers, links to additional activities, and a glossary.

PRB: World Population Data “Every year, Population Reference Bureau (PRB) provides the latest demographic data for the world, global regions, and more than 200 countries.” Explore the data in an interactive map or with charts and tables. There is also a PDF data sheet and lesson plan for teachers. “PRB Projects World Population Rising 33 Percent by 2050 to Nearly 10 Billion”